scholarly journals Crystalline fibres of a covalent organic framework through bottom-up microfluidic synthesis

2016 ◽  
Vol 52 (59) ◽  
pp. 9212-9215 ◽  
Author(s):  
David Rodríguez-San-Miguel ◽  
Afshin Abrishamkar ◽  
Jorge A. R. Navarro ◽  
Romen Rodriguez-Trujillo ◽  
David B. Amabilino ◽  
...  
Keyword(s):  
High Quality ◽  
Bottom Up ◽  
Covalent Organic Framework ◽  
Organic Framework

This work describes the formation of high quality fibres of a covalent organic framework (COF) under microfluidic conditions.

Covalent organic framework nanosheets: preparation, properties and applications

2020 ◽  
Vol 49 (8) ◽  
pp. 2291-2302 ◽  
Author(s):  
D. Rodríguez-San-Miguel ◽  
C. Montoro ◽  
F. Zamora
Keyword(s):  
Porous Materials ◽  
Covalent Organic Frameworks ◽  
Top Down ◽  
Bottom Up ◽  
Molecular Precursors ◽  
3 Dimensional ◽  
Covalent Organic Framework ◽  
Organic Framework

Covalent organic frameworks are crystalline porous materials with 2- or 3-dimensional structures designed modularly from their molecular precursors. Using bottom-up or top-down strategies, single- or few-layer materials can be obtained from them.

Bottom-up approach to engineer a molybdenum-doped covalent-organic framework catalyst for selective oxidation reaction

RSC Advances ◽  
2014 ◽  
Vol 4 (93) ◽  
pp. 51544-51547 ◽  
Author(s):  
Weijie Zhang ◽  
Pingping Jiang ◽  
Ying Wang ◽  
Jian Zhang ◽  
Yongxue Gao ◽  
...  
Keyword(s):  
Selective Oxidation ◽  
Oxidation Reaction ◽  
Catalytic Properties ◽  
Bottom Up ◽  
Covalent Organic Framework ◽  
Organic Framework

We synthesized a readily accessible molybdenum-doped covalent-organic framework catalyst (Mo-COF) linked by a hydrazine linkage via a facile two-step bottom-up approach. This Mo-COF catalyst as an open nanochannel-reactor showed promising catalytic properties for the selective oxidation reaction.

Polydopamine-modulated covalent organic framework membranes for molecular separation

2019 ◽  
Vol 7 (30) ◽  
pp. 18063-18071 ◽  
Author(s):  
Jianliang Shen ◽  
Runnan Zhang ◽  
Yanlei Su ◽  
Benbing Shi ◽  
Xinda You ◽  
...  
Keyword(s):  
Porous Support ◽  
Bottom Up ◽  
Covalent Organic Framework ◽  
Molecular Separation ◽  
Organic Framework

Ultrathin and defect-free sulfonated imine-linked COF membranes were fabricated on a porous support via a polydopamine (PDA)-modulated bottom-up approach for molecular separation.

Growth of high-quality covalent organic framework nanosheets at the interface of two miscible organic solvents

2018 ◽  
Vol 3 (2) ◽  
pp. 205-212 ◽  
Author(s):  
Yang Li ◽  
Meicheng Zhang ◽  
Xinghua Guo ◽  
Rui Wen ◽  
Xing Li ◽  
...  
Keyword(s):  
Organic Solvents ◽  
High Quality ◽  
Covalent Organic Framework ◽  
Organic Framework

A facile approach for growth of COF nanosheets at the interface of two miscible organic solvents is designed and employed.

Tuning the pore structures and photocatalytic properties of a 2D covalent organic framework with multi-branched photoactive moieties

Nanoscale ◽  
2020 ◽  
Vol 12 (30) ◽  
pp. 16136-16142
Author(s):  
Xuan Wang ◽  
Ming-Jie Dong ◽  
Chuan-De Wu
Keyword(s):  
Photocatalytic Properties ◽  
Effective Strategy ◽  
Covalent Organic Framework ◽  
Highly Efficient ◽  
Pore Structures ◽  
Local Connection ◽  
Organic Framework

An effective strategy to incorporate accessible metalloporphyrin photoactive sites into 2D COFs by establishing a 3D local connection for highly efficient photocatalysis was developed.

A Three-Dimensional Tetraphenylethylene-Based Fluorescence Covalent Organic Framework for Molecular Recognition

2020 ◽  
Author(s):  
Junxia Ren ◽  
Yaozu Liu ◽  
Xin Zhu ◽  
Yangyang Pan ◽  
Yujie Wang ◽  
...  
Keyword(s):  
Molecular Recognition ◽  
Fluorescence Probe ◽  
Three Dimensional ◽  
Hazardous Substances ◽  
Covalent Organic Framework ◽  
Highly Sensitive ◽  
Volatile Organic ◽  
Polycyclic Aromatic ◽  
Better Than ◽  
Organic Framework

<p><a></a><a></a><a></a><a></a><a></a><a></a><a></a><a>The development of highly-sensitive recognition of </a><a></a><a></a><a></a><a></a><a>hazardous </a>chemicals, such as volatile organic compounds (VOCs) and polycyclic aromatic hydrocarbons (PAHs), is of significant importance because of their widespread social concerns related to environment and human health. Here, we report a three-dimensional (3D) covalent organic framework (COF, termed JUC-555) bearing tetraphenylethylene (TPE) side chains as an aggregation-induced emission (AIE) fluorescence probe for sensitive molecular recognition.<a></a><a> </a>Due to the rotational restriction of TPE rotors in highly interpenetrated framework after inclusion of dimethylformamide (DMF), JUC-555 shows impressive AIE-based strong fluorescence. Meanwhile, owing to the large pore size (11.4 Å) and suitable intermolecular distance of aligned TPE (7.2 Å) in JUC-555, the obtained material demonstrates an excellent performance in the molecular recognition of hazardous chemicals, e.g., nitroaromatic explosives, PAHs, and even thiophene compounds, via a fluorescent quenching mechanism. The quenching constant (<i>K</i><sub>SV</sub>) is two orders of magnitude better than those of other fluorescence-based porous materials reported to date. This research thus opens 3D functionalized COFs as a promising identification tool for environmentally hazardous substances.</p>

scholarly journals 18.1% single palladium atom catalysts on mesoporous covalent organic framework for gas phase hydrogenation of ethylene

2021 ◽  
Vol 2 (7) ◽  
pp. 100495
Author(s):  
Chun-Te Kuo ◽  
Yubing Lu ◽  
Pezhman Arab ◽  
K. Shamara Weeraratne ◽  
Hani El-Kaderi ◽  
...  
Keyword(s):  
Gas Phase ◽  
Palladium Atom ◽  
Covalent Organic Framework ◽  
Hydrogenation Of Ethylene ◽  
Organic Framework

scholarly journals CN linked covalent organic framework for the efficient adsorption of iodine in vapor and solution

RSC Advances ◽  
2021 ◽  
Vol 11 (18) ◽  
pp. 10512-10523
Author(s):  
Sanan Song ◽  
Yue Shi ◽  
Ning Liu ◽  
Fengqi Liu
Keyword(s):  
Public Safety ◽  
Nuclear Wastes ◽  
Covalent Organic Framework ◽  
Organic Framework

Volatile nuclear wastes, such as iodine, have received worldwide attention because it poses risks to public safety and pollutes the environment.

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